Vulcanizer.



- A. ADAMSON-.

VULCANIZER. APPLIGATION FILED AUG. 12. 1911.

1 Patented Jan. 2, 1912 ALEXANDER ADAMSON, 01? AKB'QN, OHIO.

vunoanrznts.

Specification of Letters Eatent.

Patented Jan. 2, 1912.

Application filed August 12, 1511. Serial No. $43,692.

To all whom it may concern:

Be it known that I, ALEXANDER AnAMsoN, i

a citizen of the United States, residing at Akron, in the county of Summit and State of Ohio, have invented new and useful lmprovements in Vulcanizers, of which the follugs which are arranged to be 1 behind the'lugs on the open end lowing is a specification.

This lnventlonrelates to improvements in 'vulcanizers of the type shown and described in United States patent granted 4, 1911, and numbered 988,295.

The objectof the invention is to provide an efficient device to render the rotation of the vulcanizer-cover comparatively easy during the interlocking of the cover with the vulcaniZer-head and its removal therefrom.

As described in the before mentioned patent, the open end of 'a vulcanizer of this type is provided with a plurality of inwardly extending integral lugs below which is a shoulderprovided with a packingring to constitute a seat for the cover of the vulca-ne 'izer and the latter is provided on its lateral face with a plurality of laterally projecting to me April nterlocked of the vulcanizer by impartingto. the cover a partial rotation. Experience has demonstrated that when the cover of the vulcanizer is initially seated upon the packing-ring in the shoul der of the vulcanizer-head' its rotation to cause the lugs of the two members to inter lock is a matter of considerable difliculty and hence, the primary objectof this invention is to provide means which will temporarily and yieldingly sustain the weight of the vulcanizer-cover during its placement in such a way as to render its rotation comparativ'ely easy, and at the same time so construct the sustaining means as to in no wise interfere with the successful operation of the device.

With the foregoing and other objects in view, the invention consists in the novel construction, combination and arrangement of parts constituting the invention to be hereinafter specifically described and illustrated in the accompanying drawings which form a' part hereof wherein is shown the preferred embodiment of the invention,-but it is to be understood that changes, variaand modificationscan be resortedto which come within the scope of the claims hereunto appended. a

' In the drawings in which s'nnllar refervcanizer l eye-bolt 10 by ence numerals indicate like parts in the different figures, Figure 1, isa plan view of a vulcanizer of the type mentioned showing my improvement in operative relation therewith; Fig. 2, is a vertical, sectional view on line X of Fig. 1; and Fig. 3, is a vertical of a part of a vulapproximately on line Y lowcylinder open at one end and providedram or plunger (not interiorly with a shown), on which are placed a tier of separable molds in which are placed the articles to be vulcanized. The function of the ram orplunger being'to compress theparts of the molds together, and the tier of molds against the under face of the cover of the vulcanizer to hold-the parts of the molds firmly together during the Vulcanizing process. The ram or plunger is usually operated by hydraulic force and the articles arranged to be used medium of live steam introduced into the cylinder. Around the open end of the vulis an annular head 2 secured to the cylinder by means of hold-fast devices 3.

are cured through the a The upper end of the head 2 is provided with a laterally-extending ledge 4 surrounded by an upwardly-extending annular flange 5 on the inner face of which are inwardly-extendingspaced lugs 6. In the upper face of the ledge 4 is an annular channel to receive a packing-ring 7.

The cover of the vulcanizer comprises an inverted saucer-shaped member 8 across the interior of which extends a plurality of strength-giving radial ribs 9 and it 'has in the center a threaded opening to receive an free from the vulcanizer when desired. The lateral face of the cover is provided with a series of laterally-projecting lugs 11 spaced from each other a distance slightly greater than the width of the lugs 6 and the width which the cover may be lifted of thelugs 11 is slightly less than the Width of the spaces between the lugs 6 to permit the lugs 11 to freely pass through the spaces existing between the lugs 6 in seating the cover. The lugs 11 are arranged to be passed through thespaces between the lugs 6 and after so doing, the cover is given a partial rotation to interlock the lugs 11 behind the lugs 6. When the-cover 8 is being cover 8 is provided with a plurality of steps lowered it is usually placed upon the uppermost mold of a tier of molds positioned on the upper face of the ram or plunger and naturally seats upon either the ledge 4: or the packingring 7 during its downward movement and experience has clearly demonstrated that it requires a great effort to sufliciently rotate the cover to cause the lugs 11 to interlock behind the lugs '6 and in order to obviate this difficulty, the following mechanism is .providedi' The top of the or seats 12 on which are loosely pivoted a plurality of radial bars13 held in positionby means of hold-fast devices 14.v These bars 13 extend beyond .the lateral face of the cover and their outer ends are rounded to constitute axles for flanged-wheels 15 which"are held in position on the bars 13 by some hold-fast devices such as nuts 16. The

wheels 15 are so positioned that when the cover is lowered they will run on the upper face of the flange 5 of the vulcanizer-head with the flanges of the wheels extending laterally over the flange to serve as guiding means when rotating the cover.

. bars 13 and .preferably integral with the cover 8 are upwardly-extending lugs 17 provided with vertical, threaded openings to rethe wheels 15 resting on the flange 5. The bars 13 and wheels 15 will preferably bearranged atequal distances apart and three are customarily employed as being the best number for accomplishing the function of supporting the cover equally at all points and permit its easy rotation;

, In operation, the cover is lifted oif from the vulcanizer-head and a number of filled molds placed upon the upper face of the ram or plunger after which the cover is lowered and placed upon the uppermostmold. Theplunger is then lowered and its position is such that the lugs 11 will pass through the spaces existing between the lugs 6. After the lugs 11 have passed downwardly beyond the under faces of the lugs 6 the wheels 15 will seat upon the upper face of the flange 5 and prevent the under surface of the cover from touching either the shoulder '4 or the packing-ring 7. The weight of the cover will slightly overcome the resistance ofthe springs 531 so that the bars 13 will be slightly raised above the lugs Below the as shown in Fig. 3, however, the strength of the springs 21 will be sufficient at all times to prevent contact between the under face of the cover and the shoulder or packing-ring of the head. The cover is then easily given bar (not shown) between a pair of lugs 22 formed on the npper' face of the cover for that purpose. As soon as the cover has rotated sufficientlyto cause an interlocking engageinent between the lugs 11 and 6, the ram with its load of molds is forced upwardly against the under face of the cover which constitutes an abutment against which they molds'together during the vulcanization of the articles contained within them. After vulcanization the ram is lowered and the cover is given a partial disengaging rotation and is then lifted in unison with the tier of molds out ofthe vulcanizer.

In practice, I prefer to make the packingring of the type shown and described in the Letters-Patent hereinbefore referred to,'that is tosay, of the expansible type wherein the packing-ring is forced upwardly against the under face of the cover by means of a fluid under pressure, but as this type of packingring is well known, it'is thought that a further description thereof is believed to be unnecessary.

I claim: a i

1. The combination witha vulcanizer and a cover therefor each provided with a series of spaced lugs,,the lugs on said cover adapted to be passed through the spaces between terlocked behind'the latter when the cover is given a partial rotation, of rollers carrie by said cover and engaging said vulcanizer said cover during the interlocking -'operation.

2. The combination with a vuleanizer having at its open end a series of spaced lugs, a cover for said vulcanizer having a series interlock with the lugs on said vulcaniz'er,

of rollers carried by said cover and engaging said vulcanizer adapted to permit the easy rotation of said cover during the interlocking operation. I T

3. The combination with a vulcanizer and a cover having complementary interlocking 120 ing operation involving a partial rotation of a partial rotation, preferably by inserting a are pressed for holding the parts of the the lugs on the said vulcanizer and to be inadaptedto permit of the easy rotation of of spaced complementary lugs 'adapte'd'to.

said cover, of a plurality of flanged rollers V,

suitably inounted on said cover, and running on the upper wall of said vulcanizer for permitting the easyrotatio'n of said cover and guiding the same during the interlocking rotation of said cover, of a pluralityof radial armsoarried by said cover, rollers on said arms adapted to run on the upper face of said'vulcanizer to permit the easy rotation of said cover during the interlocking operation. p 6. The combination with a vulcanizer and a cover therefor each rotation of said cover,

provided with complementary portions adapted to interlock, the

interlocking operation involving apartial loosely pivoted radial arms mounted on said cover, springs tending to force said arms downwardly, means for adjusting the tension of said springs and rollers mounted on said arms and adapted town on the upper Wall of said vlilcanizer to permit the easy rotation of said cover during the interlock mg operation.

In testimony whereof I have hereunto set my hand in presence of two subscribing Witnesses.

ALEXANDER ADAMSON.

Witnesses: O. E. HUMPHREY,

A. L. MoCLINTooK.

copies 0! this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0.

of a plurality of 

